More from the Mailbag

Ok, I know I promised something special last week but with all of the grinding and gnashing of teeth over the election, I would hate for it to get lost in the noise.  So instead I’ll throw a quick mailbag together which I don’t mind getting lost in that noise.  In today’s questions, I’ll address […]

Dipping into the Bodyrecomposition Mailbag 2

So since I can’t think of any fascinatingly tedious topic to address this week, I’ll go the lazy route and just go with some questions instead. Always easier when someone else gives you your topic.

Digging into the Bodyrecomposition Mailbag

Hi Lyle, I recently did a dexa scan to get an estimate of my body fat % – I’m female, 28 years old, weight train regularly. My dexa scan results: 5’3, weighing 59kg and an ‘average’ of 20% body fat. I say ‘average’ as the scan showed that the body fat % in my upper body (arms, torso) was 14% while my lower body (hips, thighs) was 27%. Is it fair for me to take the average of these and consider myself to be 20% body fat?

How Long to Take Ephedrine Caffeine Stack – Q&A

One thing worth mentioning is this: EC is unusual (and possibly unique) among fat loss compounds in that chronic use actually makes it work more effectively. I do mean that this is unusual in that most drugs lose, or at least appear to lose, their effect over time (it’s a little more complicated than this but I’ll save my explanation of this statement for next week or something). Ephedrine becomes more effective over time (and the idea that it must be cycled to avoid a loss of effect is not only wrong but exactly backwards). The thing is, nobody is quite sure how this might happen.

Insulin Resistance and Fat Loss

There are a lot of silly ideas about insulin floating around (get it, hormones float around?) but just think of insulin as a storage hormone. Released in response to eating carbohydrate and protein (but not in response to fat, which can impact on insulin resistance in other ways) insulin puts the body in an energy storage mode.

Size of Deficit and Muscle Catabolism – Q&A

Ok, first let me start with a big assumption in the above which is that you must lose muscle on a diet. This has been taken as fact for years and I’ll be honest that I used to repeat it many years ago. But it’s not really true. A lot of early dieting practices, much of which came out of the drug fuelled 80’s (and which didn’t work for naturals) do allow muscle loss. But it doesn’t have to happen if you do things right.

Low Body Fat in Women, Stubborn Low Back Fat, and Skinny Fat Training

I haven’t done a Q&A in a while and the mailbag is getting a bit full. So in lieu of boring everyone with another 20-part series on some minutial detail of training, here’s a bunch of questions.

Is Fat the Preferred Fuel Source in the Body – Q&A

So let’s turn to human physiology and talk about what fuel the body ‘prefers’ to use, with the above definition in mind. Now, for the most part, most tissues in the body can generate energy (ATP for the biochemically literal minded) from either glucose or fatty acids. There are exceptions, mind you; the brain uses almost exclusively glucose but shifts to ketones under certain conditions. What it can’t use is fatty acids directly. There are couple of other weird ones, a handful of tissues in the body that only use glucose: the retina is one, part of the kidney, there’s a third I’m forgetting. There’s one other exception to this that I’ll come back to at the end.

Ammonia Smell During Exercise on Ketogenic Diet – Q&A

This is a fairly common report on very low-carbohydrate/ketogenic diet (defined, once again, as any diet containing less than 100 grams of carbohydrate per day), a report of a fairly strong ammonia smell in the sweat during exercise. As I discuss in detail in my first book The Ketogenic Diet this ammonia is produced due to the ultimate breakdown of ATP to ADP to AMP and ammonia.

Rapid Fat Loss Without Weight Training – Q&A

An additional factor, also discussed in the book is that there is often an increase in lean body mass (and this represents both muscle mass and connective tissue) when people gain body fat. From the standpoint of obtaining a ‘normal’ body weight (whatever ‘normal’ means here) losing that ‘extra’ LBM is thought to be beneficial or necessary by some obesity experts.

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